I would be amazed if M&S were not monitoring what is being said about them (they may not respond or take any notice) Large companies run software that trawls the internet looking for key words, like their name, so that they can see what is being said about them.
Our son worked for a company that provided the software and service to many major companies (many being well known High Street names)
He had gas central heating installed by one of the main energy companies, they wrecked his house and the installation was appalling and unsafe. They would not even discuss his problems until he posted his story on one of the Money web sites. The company contacted him 2 days later wishing to meet to discuss a solution that would enable him to delete his story. He had expert and photo evidence, which he posted along with the facts. Needless to say they bought in new contractors, completely replaced the system, repaired the damage and paid compensation for everything that was ruined (carpets etc)
The web is a very powerful tool, just make sure you are honest and sure of your facts, otherwise you may find your words biting you on the backside..
Shops and Cafes no longer here.
Eating with people who don't enjoy food


.
